From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BD653C33CB2 for ; Wed, 15 Jan 2020 20:51:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 996742081E for ; Wed, 15 Jan 2020 20:51:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729664AbgAOUvP (ORCPT ); Wed, 15 Jan 2020 15:51:15 -0500 Received: from mail-io1-f69.google.com ([209.85.166.69]:33728 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729541AbgAOUvN (ORCPT ); Wed, 15 Jan 2020 15:51:13 -0500 Received: by mail-io1-f69.google.com with SMTP id i8so11211627ioi.0 for ; Wed, 15 Jan 2020 12:51:13 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=OqGpk3d1n93MNn3ynIn9sN0lhPXpjDGu0bKu+4j0ONc=; b=JLCqjlpHaa8sqG0XO8Yvb3FphopMB1h75LvzjD2bI18nLaZowzKNgqAIZvEzAh4yWH tVcvk7dHhqV8Igp0EbEhqnsIQjR0RUvQslkZPJsqlSUUMAkR6E7uKWHu5vFLfjf/4SOp gOA960s0pUv5BRwoAggG6/SVeFuX/RsgsXgoPlW26gYlwqorHpVZ0L9m1sizY8fGyOjx IDNUSPNBicIGH0Ch9kvb6g9S0hzJLXT5fg+YRah6HgdrHh4ALP053zLGQuZrP8iD3g1C b5wt78LL1nPg4gH8LjXwB1JDJeei4T6XakvKXx4O1WkjHlG5d6EdkKVB9RM2MSycpOkd NM+w== X-Gm-Message-State: APjAAAUONfpRUAOtJ5Z5rZ1hbf6LY1vicSEX9x5ZphjivuKizngjE0mN /337tiYcrH2vKGrduBIPg8s2cOmTkyLubzk3TuSrv53L+KKr X-Google-Smtp-Source: APXvYqwnEF2vzML966Ty5Kam9J16KCLEYWZ7qUfNwB+zgu0s43zrVsFpkGVzIkDvJrlbl3v/sfs7e0WUU8z3WiAtQemQ9cPptrCj MIME-Version: 1.0 X-Received: by 2002:a5d:80d6:: with SMTP id h22mr11791574ior.129.1579121473020; Wed, 15 Jan 2020 12:51:13 -0800 (PST) Date: Wed, 15 Jan 2020 12:51:13 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000074ed27059c33dedc@google.com> Subject: general protection fault in nft_chain_parse_hook From: syzbot To: coreteam@netfilter.org, davem@davemloft.net, fw@strlen.de, kadlec@netfilter.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 4e2fa6b9 Merge branch 'bridge-add-vlan-notifications-and-r.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=142f4a21e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=66d8660c57ff3c98 dashboard link: https://syzkaller.appspot.com/bug?extid=156a04714799b1d480bc compiler: gcc (GCC) 9.0.0 20181231 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+156a04714799b1d480bc@syzkaller.appspotmail.com kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 20602 Comm: syz-executor.1 Not tainted 5.5.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nft_chain_parse_hook+0x386/0xa10 net/netfilter/nf_tables_api.c:1767 Code: e8 7f ae 09 fb 41 83 fd 05 0f 87 62 05 00 00 e8 f0 ac 09 fb 49 8d 7c 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a6 05 00 00 44 89 e9 be 01 00 RSP: 0018:ffffc90001627100 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffc900016272b0 RCX: ffffc90004e59000 RDX: 0000000000000003 RSI: ffffffff866b5350 RDI: 0000000000000018 RBP: ffffc900016271f0 R08: ffff8880648b4240 R09: 0000000000000000 R10: fffff520002c4e2f R11: ffffc9000162717f R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900016271c8 FS: 00007f0770558700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcdd829cdb8 CR3: 00000000a483c000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nf_tables_addchain.constprop.0+0x1c1/0x1520 net/netfilter/nf_tables_api.c:1888 nf_tables_newchain+0x1033/0x1820 net/netfilter/nf_tables_api.c:2196 nfnetlink_rcv_batch+0xf42/0x17a0 net/netfilter/nfnetlink.c:433 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:543 [inline] nfnetlink_rcv+0x3e7/0x460 net/netfilter/nfnetlink.c:561 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x59e/0x7e0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:672 ____sys_sendmsg+0x753/0x880 net/socket.c:2343 ___sys_sendmsg+0x100/0x170 net/socket.c:2397 __sys_sendmsg+0x105/0x1d0 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2437 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45aff9 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0770557c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f07705586d4 RCX: 000000000045aff9 RDX: 00000000040c4080 RSI: 000000002000c2c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000901 R14: 00000000004ca2fe R15: 000000000075bf2c Modules linked in: ---[ end trace c2d6a3781de0914d ]--- RIP: 0010:nft_chain_parse_hook+0x386/0xa10 net/netfilter/nf_tables_api.c:1767 Code: e8 7f ae 09 fb 41 83 fd 05 0f 87 62 05 00 00 e8 f0 ac 09 fb 49 8d 7c 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a6 05 00 00 44 89 e9 be 01 00 RSP: 0018:ffffc90001627100 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffc900016272b0 RCX: ffffc90004e59000 RDX: 0000000000000003 RSI: ffffffff866b5350 RDI: 0000000000000018 RBP: ffffc900016271f0 R08: ffff8880648b4240 R09: 0000000000000000 R10: fffff520002c4e2f R11: ffffc9000162717f R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900016271c8 FS: 00007f0770558700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd461cd0000 CR3: 00000000a483c000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.